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Er-doped gadolinium yttrium silicate laser crystal and preparation method thereof

A technology of laser crystals and erbium silicate, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve unseen problems, achieve large emission bandwidth, wide wavelength tuning, and improve pumping efficiency

Inactive Publication Date: 2010-11-17
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no Er:(Gd x Y 1-x ) 2 SiO 5 Reports about crystals

Method used

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  • Er-doped gadolinium yttrium silicate laser crystal and preparation method thereof
  • Er-doped gadolinium yttrium silicate laser crystal and preparation method thereof
  • Er-doped gadolinium yttrium silicate laser crystal and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Select y=0.005, x=0.9, set Er 2 o 3 , Gd 2 o 3 , Y 2 o 3 and SiO 2 The high-purity raw materials are weighed according to a molar ratio equal to y:x(1-y):(1-x)(1-y):1 to form ingredients. After the ingredients are mixed evenly, they are pressed into blocks on a hydraulic press, sintered at a temperature higher than 1100°C for 30 hours, and placed in an iridium crucible. The b-axis GSO crystal is used as the seed crystal for pulling growth, and the crystal is grown on high-purity N 2 in the atmosphere. The pulling speed was 1 mm / h, and the rotation speed was 30 rpm. For the grown 0.5% Er:Gd 1.8 Y 0.2 SiO 5 The crystal is tested for absorption spectrum performance, and the grown Er:(Gd x Y 1-x ) 2 SiO 5 The crystal was cut into slices, and after optical polishing, its spectral performance was tested at room temperature, and the absorption spectrum was tested with a Lambda 900 spectrophotometer. Fluorolog-3 fluorescence spectrometer was used to test the inf...

Embodiment 2

[0023] Will Er 2 o 3 , Gd 2 o 3 , Y 2 o 3 and SiO 2 High-purity raw materials are weighed according to y=0.005, x=0.5. After mixing evenly, press it into a block on a hydraulic press, sinter at a temperature higher than 1100 ° C for 30 hours, put it in an iridium crucible, and grow the crystal by pulling method. The seed crystal is a b-axis GSO single crystal rod, and the crystal grows on High purity N 2 in the atmosphere. The pulling speed was 1.8 mm / h, and the rotation speed was 20 rpm.

Embodiment 3

[0025] Will Er 2 o 3 , Gd 2 o 3 , Y 2 o 3 and SiO 2 High-purity raw materials are weighed according to y=0.005, x=0.1. After mixing evenly, press it into a block on a hydraulic press, sinter at a temperature higher than 1100 ° C for 30 hours, put it in an iridium crucible, and grow the crystal by pulling method. The seed crystal is a b-axis GSO single crystal rod, and the crystal grows on High purity N 2 in the atmosphere. The pulling speed was 3 mm / h, and the rotation speed was 15 rpm.

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Abstract

The invention relates to an Er-doped gadolinium yttrium silicate laser crystal and a preparation method thereof. The laser crystal has a molecular formula: (EryGdx (1-y) Y (1-x) (1-y)) 2SiO5, wherein the numeric range of the y is 0.005 to 0.01, and the numeric range of the x is more than zero and not more than 0.9. The Er-doped gadolinium yttrium silicate laser crystal grows by adopting a melt method. The laser crystal can carry out light source pumping by adopting a commercial InP laser diode or Er optical fiber laser, has large emission bandwidth and is beneficial to wide wavelength tuning.

Description

technical field [0001] The present invention relates to laser crystal, particularly a kind of yttrium-gadolinium silicate laser crystal (abbreviated as Er:(Gd x Y 1-x ) 2 SiO 5 ), which is suitable for resonant pumping of indium phosphide diodes (referred to as InP diodes) and erbium fiber lasers. Background technique [0002] Erbium-doped laser materials have attracted much attention due to their two interesting wavelengths. One is Er 3+ 4 I 11 / 2 → 4 I 13 / 2 The laser wavelength around 2.9μm generated by the transition, the other is Er 3+ 4 I 13 / 2 → 4 I 15 / 2 The laser wavelength generated by the transition is around 1.5 μm. The 2.9μm coincides with the position of the absorption peak of water, so it has great application prospects in biology and medicine, and the 1.5μm laser can be used as a safe laser for human eyes and can be used in optical fiber communication, so it is suitable for It is of great significance in the fields of laser processing, communicatio...

Claims

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Application Information

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IPC IPC(8): C30B29/34C30B11/00H01S3/16
Inventor 赵广军董勤丁雨憧陈建玉
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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